Australia

Hi, foreign universities have career assistance departments through which they provide career services such as mentoring, career counselling, career fairs, etc. There is no campus placement by foreign universities. Your chances of getting a good job will depend on how strong you are academically and how skilled you are in your subject. You may read about the career services here:
http://www.ecu.edu.au/careers-and-leadership-services/overview

Hi Shrikanth,
Both the countries have a very good market for data analysts and the decision making may be tough for you. You may refer to the skilled occupation or labour shortages lists and see the demand of this profession. Choose where opportunities are better. Remember to choose a reputed university with strong corporate tie-ups. Also, check for work permit schemes and stay back options. You must compare these and decide.
Check the universities, requirements, budget, expenses, etc. Australia is expensive as compared to Ireland. Check out blogs and alumni information as well.

You should better try again and score a minimum of 6 bands. Then you can surely apply for Canada.

Yes, even without experience, you can get admission in Australia for MBA.
Australian business schools consider the prior knowledge of the student in a professional setup to be utmost important in his/her management training business schools. That is the reason why they give more priority to work-experienced person even if he hasn't appeared for GMAT.
But there are many colleges which offer Executive MBA and Non-Executive MBA. So, you can definitely get admission.
Just remember your extra-curricular activities, your statement of purpose, your English language test scores (IELTS/TOEFL scores) are also vital along with the GMAT score.

Hi Meghana,
Yes, you can but different universities have different entry requirements so you must check these on the websites. You must also take the IELTS or TOEFL to meet the English language requirements.

Hello Junaid,
You are advised to read the PR rules and protocols on the Australia immigration website, check the procedures and how you can apply. I hope you are aware of getting a job first and working in Australia before you could apply for a PR. This is the official link below:
http://www.australia.gov.au/information-and-services/immigration-and-visas

Hello Aksa,
It will be difficult without work experience as business schools prefer applicants with a minimum of 2-years of work experience for the MBA programmes. You can look out for PG Diploma programmes, very popular here and also you can check out the MS Management courses.